A business was recently breached due to a user downloading a file from the internet. This file, once opened, ran a Trojan virus throughout the organization's network. The business wants a better way to detect this type of activity. What should they replace their antivirus with, even though it costs more money?

A. enable 2FA
B. check that all firewalls are operational
C. enforce a more strict email policy
D. implement ETDR

D. implement ETDR

ETDR (Endpoint Threat Detection and Response) solutions are specifically designed to detect and respond to advanced threats like Trojan viruses. They provide real-time monitoring and analysis of endpoint activities to identify suspicious behavior and quickly respond to any threats. While they may cost more money than traditional antivirus software, they offer a more comprehensive and effective way to protect against sophisticated cyber attacks.